Rock Identifier

Category

Synthetic Glass

Browse synthetic glass specimens identified by the Rock Identifier community.

Learn about Synthetic Glass in the encyclopedia

Opalite

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zincite

Sideromelane

Lead Feldspar

Black Obsidian

Maskelynite

Obsidian

Tachylite

Hyalite Opal

Perlite

Macusanite

Obsidian (Black Obsidian) (Obsidian (Volcanic Glass)) — igneous

Obsidian (Black Obsidian)

Obsidian (Volcanic Glass)

Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

Black Obsidian (Obsidian (Volcanic Glass)) — igneous

Black Obsidian

Obsidian (Volcanic Glass)

Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Pumice (Vesicular volcanic glass) — igneous

Pumice

Vesicular volcanic glass

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Carnelian/chalcedony rough (Microcrystalline quartz (SiO₂), iron-oxide-colored chalcedony) — mineral

Carnelian/chalcedony rough

Microcrystalline quartz (SiO₂), iron-oxide-colored chalcedony

Chert or flint fragment (Microcrystalline quartz (SiO₂), commonly called chalcedony or flint) — sedimentary

Chert or flint fragment

Microcrystalline quartz (SiO₂), commonly called chalcedony or flint

Clear Quartz Sphere (Crystalline Silicon Dioxide (SiO2)) — mineral

Clear Quartz Sphere

Crystalline Silicon Dioxide (SiO2)

Chert (variant Flint/Jasper) (Microcrystalline Opaline Silica (SiO2)) — sedimentary

Chert (variant Flint/Jasper)

Microcrystalline Opaline Silica (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — Mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (specifically Milky Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Milky Quartz Pebble)

Silicon Dioxide (SiO2)

Chert / Flint with Cortex (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint with Cortex

Silicon Dioxide (SiO2)

Quartz on Greenstone (Silicon Dioxide (SiO2) on Altered Igneous Geologic Unit) — metamorphic

Quartz on Greenstone

Silicon Dioxide (SiO2) on Altered Igneous Geologic Unit

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Quartz (Milky/Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Quartz Crystal (Geode Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal (Geode Fragment)

Silicon Dioxide (SiO2)

Sandstone (Weathered / Crushed) (Quartz Sandstone) — sedimentary

Sandstone (Weathered / Crushed)

Quartz Sandstone

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Slag Glass (Amorphous Silica Glass (with metal oxide inclusions)) — Mineraloid / Industrial Waste

Slag Glass

Amorphous Silica Glass (with metal oxide inclusions)

Mineraloid / Industrial Waste

Slag Glass (Vitreous Silicate Residue) — industrial byproduct (anthropogenic rock)

Slag Glass

Vitreous Silicate Residue

industrial byproduct (anthropogenic rock)

Sea Glass (Amorphous Silica (Anthropogenic glass) - SiO2) — mineral

Sea Glass

Amorphous Silica (Anthropogenic glass) - SiO2

Slag Glass (Glassy Silicate Residue) — industrial byproduct

Slag Glass

Glassy Silicate Residue

industrial byproduct

Slag Glass (Amorphous Silicate (Man-made)) — industrial byproduct

Slag Glass

Amorphous Silicate (Man-made)

industrial byproduct

Green Slag Glass (Amorphous Silicon Dioxide (with metallic impurities)) — Igneous (Anthropogenic)

Green Slag Glass

Amorphous Silicon Dioxide (with metallic impurities)

Igneous (Anthropogenic)

Fulgurite (Fulgurite (Lechatelierite/Silica glass)) — mineral

Fulgurite

Fulgurite (Lechatelierite/Silica glass)

Quartz (Milky/Crystalline variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

Petrified Wood (Silicified Wood (Permineralized organic tissue)) — fossil

Petrified Wood

Silicified Wood (Permineralized organic tissue)

Citrine (or Yellow Chalcedony / Quartz) (Silicon Dioxide (SiO2)) — mineral

Citrine (or Yellow Chalcedony / Quartz)

Silicon Dioxide (SiO2)

Tumbled Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Tumbled Rose Quartz

Silicon Dioxide (SiO2)

Quartz with Iron Staining (Silicon Dioxide (SiO2) with Hematite/Limonite inclusions) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

Chert (Flint) (SiO2 (Microcrystalline Quartz)) — sedimentary

Chert (Flint)

SiO2 (Microcrystalline Quartz)

Chert (variations include Flint/Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Flint/Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Tan/Yellow variety) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Tan/Yellow variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Iron-stained Quartz (Silicon Dioxide with Iron Oxide (SiO2 with Limonite/Hematite impurities)) — mineral

Iron-stained Quartz

Silicon Dioxide with Iron Oxide (SiO2 with Limonite/Hematite impurities)

Chalcedony (Common Opal or Agate variant) (Silicon Dioxide (SiO₂)) — mineral

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)